1.
Rancidity: Rancidity is a chemical process in which edible oils
or fats get oxidized over a period of time and become inedible (unfit for human
consumption) is called rancidity.
2.
Endothermic
reactions: The
reactions in which heat is absorbed are called endothermic reactions. The
reactants absorb heat for form products.
3.
Redox
reaction: The
chemical reactions in which oxidation and reduction takes place simultaneously
are called redox reactions. ‘Red’ stands for reduction and ‘ox’ stands for
oxidation.